When a woman is abducted and the self-proclaimed â€œMerchant of Lifeâ€ demands strict adherence to his impossible terms, the police are perplexed.

Private investigators Jake and Annie Lincoln are drawn into peril when the kidnapper demands Jake deliver the ransom money. The exchange takes place as planned, but when the abducted womanâ€™s body is discovered brutally murdered, the search for an unpredictable madman begins.

As the kidnappings continue, the Lincolnsâ€™ own lives are put in jeopardy as they scramble to unweave this baffling puzzle before the treacherous murderer can claim more victims, among whom may be the Lincolns themselves.